Provided by: pngtools_0.4-1_i386 bug

NAME

       pnginfo - display information on the PNG files named

SYNOPSIS

       pnginfo [-t] [-d] [-D] <filenames>

DESCRIPTION

       This command dumps information about the PNG files named on the command
       line. This command's output is based on  the  output  of  the  tiffinfo
       command, which is part of the libtiff distribution. Each line output by
       the command represents a value that has been set within the PNG file.

       The -t command line option forces pnginfo to use libtiff tiffinfo style
       lables,  instead  of  the  more relevant png names. The -d command line
       option dumps the bitmap contained by the image to standard out,  whilst
       the  -D  command merely checks that the image bitmap could be extracted
       from the file. If nothing is reported by -D, then there was no error.

       The format for the output  bitmaps  is  hexadecimal,  with  each  pixel
       presented as a triple -- for instance [red green blue]. This means that
       paletted images et cetera  will  have  their  bitmaps  expanded  before
       display.

RETURNS

       Nothing.

EXAMPLE

       pnginfo -t toucan.png basn3p02.png basn6a16.png toucan.png...
         Image Width: 162 Image Length: 150
         Bits/Sample: 8
         Samples/Pixel: 1
         Pixel Depth: 8
         Colour  Type (Photometric Interpretation): PALETTED COLOUR with alpha
       (256 colours, 256 transparent)
         Image filter: Single row per byte filter
         Interlacing: Adam7 interlacing
         Compression Scheme: Deflate method 8, 32k window
         Resolution: 0, 0 (unit unknown)
         FillOrder: msb-to-lsb
         Byte Order: Network (Big Endian)
         Number of text strings: 0 of 0

       basn3p02.png...
         Image Width: 32 Image Length: 32
         Bits/Sample: 2
         Samples/Pixel: 1
         Pixel Depth: 2
         Colour Type (Photometric Interpretation): PALETTED COLOUR (4 colours,
       0 transparent)
         Image filter: Single row per byte filter
         Interlacing: No interlacing
         Compression Scheme: Deflate method 8, 32k window
         Resolution: 0, 0 (unit unknown)
         FillOrder: msb-to-lsb
         Byte Order: Network (Big Endian)
         Number of text strings: 0 of 0

       basn6a16.png...
         Image Width: 32 Image Length: 32
         Bits/Sample: 16
         Samples/Pixel: 4
         Pixel Depth: 64
         Colour Type (Photometric Interpretation): RGB with alpha channel
         Image filter: Single row per byte filter
         Interlacing: No interlacing
         Compression Scheme: Deflate method 8, 32k window
         Resolution: 0, 0 (unit unknown)
         FillOrder: msb-to-lsb
         Byte Order: Network (Big Endian)
         Number of text strings: 0 of 0

SEE ALSO

       pngchunkdesc(1), pngchunks(1), pngcp(1),

AUTHOR

       pnginfo was written by Michael Still <mikal@stillhq.com>.

       This   manual   page   was   written   by   Nelson   A.   de   Oliveira
       <naoliv@debian.org>, for  the  Debian  project  (but  may  be  used  by
       others).

                        Tue, 31 Jul 2007 17:55:51 -0300             PNGINFO(1)